Modern Front-End Development for Rails

Turbo Streams and ActionCable

The turbo-rails gem, which we added when we installed Hotwire and Turbo in Chapter 1, ​Getting Started with Client-Side Rails​, provides a set of helpers for managing ActionCable connections. Those helpers allow Rails to automatically send Turbo Stream HTML over the ActionCable connections and then enable the Turbo Stream actions to be executed on the client when the message is received.

Very broadly, these helpers allow us to do three things:

• Connect a view to an ActionCable channel via a helper method in the view itself

• Broadcast a Turbo Stream to an ActionCable channel as part of the response to a controller request

• Broadcast a Turbo Stream to an ActionCable channel automatically as a callback when an ActiveRecord ...